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A Star is Born!. The Life Cycles of Stars. Twinkle, Twinkle, Little Star . How I Wonder What You Are ... . When you look up into the night sky, what do you see? When you look into the day sky, what so you see? Shoulder Partners: What is a star?. Stars have… .
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A Star is Born! The Life Cycles of Stars
How I Wonder What You Are ... • When you look up into the night sky, what do you see? • When you look into the day sky, what so you see? • Shoulder Partners: • What is a star?
Stars have… Differentcolors The hotter a star is, the faster it burns its life away.
Star color Determined by surface temperature. Hottest are blue – coolest are red.
Stellar Material Space is filled with the stuff to make stars.
But not this kind of dust that you find in your house Stars start from clouds Clouds provide the gas and dust from which stars form.
Becomes a Protostar The nebula begins to smash due to gravity. The pressure and temperature increase and becomes a PROTOSTAR
This process is known as Nuclear Fusion ! • AND A STAR IS BORN! E = mc2
New Stars are not quiet ! Gas shooting out from a young star system
All Types of Stars Recall - Stars have Differentcolorswhich indicate different temperatures
RED GIANT When a star loses its mass during fusion, it gives off energy. A star will expand and becomes a RED GIANT like the SUN.
WHITE DRAWF As the star runs out of fuel it will shrink in size and becomes a White Dwarf
PULSAR A PULSAR is a rotating white dwarf that gives off radio waves
SUPER NOVA At the end of a star’s life it explodes. The exploding star can outshine all of the other stars in the galaxy for several days and may leave behind only a crushed core. This is called a SUPER NOVA
Life cycle of a star When a star forms it begins its “life.” Sun-like Stars Massive Stars When a star runs out of fuel, it dies.
This diagram follows the life of both large and average stars.
Life cycle of our sun We are now here
The End of the Line for Large Stars • Large stars burn many chemical elements. • Iron is one of these elements. • Instead of releasing energy, Iron uses energy.
Pointer stars in the "Big Dipper" lead to Polaris, the North Star.
What’s Your Sign? • Astrology and Horoscopes ~ http://mail.colonial.net/~ http://www.enchantedlearning.com/subjects/astronomy/stars/zodiac.shtml
Using Technology • Astrology Research Site: • http://www.astrology-online.com/persn.htm • My Voice Thread • http://voicethread.com/#q.b1140076
Zodiac Signs and Birthdays Student Use of Embedded technology
